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how to view the phone memory and delete items??/?//////?/////
You need to download an app , root explorer ot titanium backup for example, and then you could view
But you can't delete any item from phone memory until you root 
Although you can see phonne memory from mobile iself
Settings > applications > all > 
I recommend an app called "DiskUsage". It lets you see ecaxtly what is using both your internal storage memory and your SD card storage. Some apps that have been moved to your SD card will also store a lot of data in your internal storage, and this app lets you see all of app usage, data usage and cache usage.
https://play.google.com/store/apps/details?id=com.google.android.diskusage&hl=en